Abstract: In this paper, several Artificial Intelligence (AI) techniques such as Rule-Based Reasoning (RBR), Bayesian Networks (BNs), Neural Networks (NNs), Case- Based Reasoning (CBR), Qualitative Reasoning (QR), and Model-Based Reasoning (MBR) are described. Then an automated management system prototype is presented. Finally, a hybrid approach to automated network and system management is proposed. However, we focus on fault diagnosis.